diff --git a/Telegram/Resources/uwp/AppX/AppxManifest.xml b/Telegram/Resources/uwp/AppX/AppxManifest.xml
index 63028397b..a80961461 100644
--- a/Telegram/Resources/uwp/AppX/AppxManifest.xml
+++ b/Telegram/Resources/uwp/AppX/AppxManifest.xml
@@ -9,7 +9,7 @@
   <Identity Name="TelegramMessengerLLP.TelegramDesktop"
     ProcessorArchitecture="ARCHITECTURE"
     Publisher="CN=536BC709-8EE1-4478-AF22-F0F0F26FF64A"
-    Version="1.9.14.0" />
+    Version="1.9.15.0" />
   <Properties>
     <DisplayName>Telegram Desktop</DisplayName>
     <PublisherDisplayName>Telegram FZ-LLC</PublisherDisplayName>
diff --git a/Telegram/Resources/winrc/Telegram.rc b/Telegram/Resources/winrc/Telegram.rc
index 345ef0176..adf6bd3f8 100644
--- a/Telegram/Resources/winrc/Telegram.rc
+++ b/Telegram/Resources/winrc/Telegram.rc
@@ -33,8 +33,8 @@ IDI_ICON1               ICON                    "..\\art\\icon256.ico"
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 1,9,14,0
- PRODUCTVERSION 1,9,14,0
+ FILEVERSION 1,9,15,0
+ PRODUCTVERSION 1,9,15,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -51,10 +51,10 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "Telegram FZ-LLC"
             VALUE "FileDescription", "Telegram Desktop"
-            VALUE "FileVersion", "1.9.14.0"
+            VALUE "FileVersion", "1.9.15.0"
             VALUE "LegalCopyright", "Copyright (C) 2014-2020"
             VALUE "ProductName", "Telegram Desktop"
-            VALUE "ProductVersion", "1.9.14.0"
+            VALUE "ProductVersion", "1.9.15.0"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/Telegram/Resources/winrc/Updater.rc b/Telegram/Resources/winrc/Updater.rc
index fd3ccd378..d809b940b 100644
--- a/Telegram/Resources/winrc/Updater.rc
+++ b/Telegram/Resources/winrc/Updater.rc
@@ -24,8 +24,8 @@ LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 1,9,14,0
- PRODUCTVERSION 1,9,14,0
+ FILEVERSION 1,9,15,0
+ PRODUCTVERSION 1,9,15,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -42,10 +42,10 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "Telegram FZ-LLC"
             VALUE "FileDescription", "Telegram Desktop Updater"
-            VALUE "FileVersion", "1.9.14.0"
+            VALUE "FileVersion", "1.9.15.0"
             VALUE "LegalCopyright", "Copyright (C) 2014-2020"
             VALUE "ProductName", "Telegram Desktop"
-            VALUE "ProductVersion", "1.9.14.0"
+            VALUE "ProductVersion", "1.9.15.0"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/Telegram/SourceFiles/core/version.h b/Telegram/SourceFiles/core/version.h
index 79766c78c..1f5568a25 100644
--- a/Telegram/SourceFiles/core/version.h
+++ b/Telegram/SourceFiles/core/version.h
@@ -22,7 +22,7 @@ constexpr auto AppId = "{53F49750-6209-4FBF-9CA8-7A333C87D1ED}"_cs;
 constexpr auto AppNameOld = "Telegram Win (Unofficial)"_cs;
 constexpr auto AppName = "Telegram Desktop"_cs;
 constexpr auto AppFile = "Telegram"_cs;
-constexpr auto AppVersion = 1009014;
-constexpr auto AppVersionStr = "1.9.14";
-constexpr auto AppBetaVersion = false;
+constexpr auto AppVersion = 1009015;
+constexpr auto AppVersionStr = "1.9.15";
+constexpr auto AppBetaVersion = true;
 constexpr auto AppAlphaVersion = TDESKTOP_ALPHA_VERSION;
diff --git a/Telegram/build/version b/Telegram/build/version
index 1ce9141a3..0d5c2af02 100644
--- a/Telegram/build/version
+++ b/Telegram/build/version
@@ -1,7 +1,7 @@
-AppVersion         1009014
+AppVersion         1009015
 AppVersionStrMajor 1.9
-AppVersionStrSmall 1.9.14
-AppVersionStr      1.9.14
-BetaChannel        0
+AppVersionStrSmall 1.9.15
+AppVersionStr      1.9.15
+BetaChannel        1
 AlphaVersion       0
-AppVersionOriginal 1.9.14
+AppVersionOriginal 1.9.15.beta
diff --git a/changelog.txt b/changelog.txt
index 0d4d83a23..a47e41097 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,3 +1,8 @@
+1.9.15 (21.02.20)
+
+- Mark new messages as read while scrolling down through them.
+- Bug fixes and other minor improvements.
+
 1.9.14 (17.02.20)
 
 - Bug fixes and other minor improvements.